Mining machine



Gm, 25, W32. 1.. M7 WELD ET AL MINING MACHINE 2 Sheets-Sheet Filed Oct.31, 1930 I NVENTORS Law's/71. Wzd J5 fill/17. 0/112! BY dlzzrezzce I I.Berh'lew Get. 25, 1932. L. M. WELD ET AL 1,884,986

MINING MACHINE Filed Oct. 31, 1930 2 Sheets-Sheet 2 INVENTORS ILaazsfll. b Jillubli. 0mm

Clarezwefi'. Berlilew T RNEY.

:i go tional view.-

Y in top plate for the arm.

Patented Oct. 25, 1932 e mm 1,884,98&

Lor s mwnLn, mm 11 our-ER, AND CLARENCE n. BERKLEY, or nnxnnsiaann, jPENNSYLVANIA' Y Jimmie MACHINE i Application med; October: 31, 1930;Serial: m. 49:2;540;

The presentinvention: relates particularly that p milling machines inwhichan endtess inv cutter is employedlfor undert mg. purposes.

The primary object of the presentinve'n tionis to provide an apparatusthat is very simple in construction, is very light in weight. andcompact, as-a consequenceof which. it can. be usedv in. small mines isreadilyhandled,

m andrequires a relatively small amount of power to operate, making itpossible to be driven. from storage: batteries,v so: that it may be usedin isolated places where an electrical power line is not available.

21 The preferred embodiment of theinvention is illustrated in theaccompanyingv drawlngs, wherein:

Figure. 1. is aside eleyation'of the machine. Figure 2 is a vert1carllongitudinal. sec- Figure 3 is a. horizontal.sectionalview.

Figure 4 is a detail cross sectional view on the line 4.4 of Figure 2..1

Figure 5 isa detailperspective view of the Figure 6 is a. perspectiveview of the. core frame-for the arms I Figure 7 is a detail perspectiveview of one of the reenforcing plates. v

Figure-8 is a perspective view of the sprocket wheel carrier employed atthe outer end of the arm. V

Figure 9 is a bottom perspective view of the ball race member for thethrust bearing.

Figure lO i's a perspe'ctive view of the" antifriction rollercage. 1

Figure: 11 is a erspeetive view of the journal box forthe said cage.

Figure 12 is a detail perspective one of the pick=carrying links. I

Figure 1?- is a] perspective view ,of the spindle for the outersprocketwheel.

' Figure is a detail view of one of the draft or winch wheels showingthe parts separated. In the structure'- disclosed a; main body View offrame is employed, consisting of a brass pl'ate and a top plate 16' madeof relatively heavy sheet or plate metal and separated. by spacersleeves 17 Through: these sleeves pass tie 7 shown in Figure 4,. therebyproducin'gguidebolts that secure the plates and 116 to- 1 gethera 1 I iI firojectingffrom thev rear end of. the body 1 is an arm: designatedgenerallyby the reference numeral. 1-9... This arm has. a 'coreframe.QOcQnsisting ofllongitudinal bars21 connected. bycross, bars 22. Theframe may bef'a single piece casting or otherwise suitably constructed.On the under-face. of I this frame: is secured a bottom plate 23,, and.to. the" upper face of the frame. is. secured. a top pl-ate24,.these,platesbeing elongated'fand extendin not. only beyond the endsof the frame 2(l,but also beyond the sides thereof, as

ways 25 in: the oppositeside edges of the arm.

1 The inner end. of this arm 19extends into the. space between the baseand? cap plates 15. and 16 of the body,' and interposed between said.inner, end of saidarm and said. plates are strengthening plates 26.This, assembly is suitablysecured together by rivets 27. or other approriate fasteners. As. a consequence it wi l he noted-that while the baseplate 15 of the. body rests upon, the ground, the arm" is helda slightdistance above the same. An. exceedingly light but nevertheless strongframe-work is provided for the cut.- ting mechanism.

Mounted on the central portion of the cap .plate'l6' of the body is asuitable; electric motor 28 that may be of any desired character, but ispreferably reversible. It is controlled by a suitable switch 29 mountedthereon. An angular bracket 30, secured to the motor, is also securedto. the rear end of the top plate.- J ournaled in this bracket, is avertical. drive shaft 31that extends. downwardly through the cap: plate16, through the upper reenforcing plates 26, and'the top plate 24 of thearm. Thisshaft 31-, as shown particshaft and the'interior of the box 32.Mount ed on said box is a race-way 35 in which are balls 36 borne uponby a wear washer 37.

The washer 37 has restingon it the hub 38. of

a bevel gear 39 keyed to the shaft and in 23 and 24 and beyond the coreframe 20,: In

mesh with another bevel gear on the motor shaft 41. There is thusprovided not only a roller bearing for the shaft 31, but ananti-friction thrust bearing also.

Mounted on the lower end of the shaft 31 between the inner ends of theplates 23 and 24 is a sprocket wheel 42. Another sprocket wheel 43 ismounted at the outer or rear end of the arm 19. i For this purpose asubstantially U-shaped carrier frame 44 is slidably mounted between theouter ends of the plates this carrier 44 is located a spindle 45 onwhich the sprocket wheel 43 is journaled. The ends ofthe spindle areangular and are engaged in openings in the top and bottom ofthecarrier44 and said angular ends project into elongated guideways 46 formed inthe top and bottom plates 23 and 24. A cap piece 47 is preferablysecured to the upper end of the spindle 45 and overlies the upper slot46. In order to adjust the carrier 44 and the sprocket wheel 43 and holdthe same when adjusted, a threaded shank 48 is secured to the rear endof the carrier and slidably passes through an opening 49 in the adjacentcross bar 22 of the core frame 20. A nut 50, threaded on this shank 48,and bearing against the cross bar 22, serves to act as means for forcingthe carrier outwardly or rearwardly of the arm and hold it againstreturn movement. The top plate 24, as shown particularly in Figures 2and 5, has an opening 51 giving access to the nut 50.

An endless cutter chain passes around the sprocket wheels 42 and 43 andhas its side stretches operating in the guideways' or grooves 25 formedby the side extensions of the plates 23 and 24 beyondthe longitudinalbars 21 of the core frame (see Figure 4). This chain consists of heavylinks 52 having outstanding portions 53 provided with transverse sockets54 to receive the picks 55 which are held in place by verticallydisposed set screws 56 that are located outside the edges of the top andbottom arm plates 23 and 24, so that they are entirely available. Theheavy links52 are connected by sets of lighter links 57 which serve tocomplete the chain.

Mounted on the rear end of the top frame behind the motor 28 is a winch.The mounting consists of a pair of brackets 58 in which is a horizontaltransversely disposed shaft 59. On the central portion of this shaft,between the brackets 58, is fixed a ratchet wheel 60 adapted to be heldagainst rotation in one direction by a pawl 61. A hand lever 62 has aforked end 63 fulcrumed on the shaft 59 on opposite sides of the ratchetwheel 60,

and in the fork is mounted a pawl 64 that operates on said ratchet wheel60. The ends .of the shaft 59 project beyond the sides of the cap plate1.6 and have secured thereto chainengaging draft wheels. As shown thesedicated at 69. In order that these chains may pass around the greaterpartof the circumference of the draft wheelsfidler rollers are journaled on brackets 71 suitably secured toth-e brackets 58.

It will be understood that this machine is employed as are miningmachines of this type. The motor 28 driving the vertical shaft 31,thereby rotates the sprocketwheel 42 and operates the chain cutter. Thetautness of this chain cutter can'be maintained by thelongitudinaladjustment of the sprocket wheel 43, which, as already explained, ismounted inv a, movable carrierthat is. moved and'held by the nut 50 onthe shank 48. To advancethe machine it is only necessary to operate thehand lever 62.: By reason of the structural features set forth theapparatus is very light in weight and yet is strong to resist thestrains and stresses thatmay be brought against it. It is compact andcan be readily transported from'place to place and employed in confinedspaces. Moreover the structure permits the use of a low powered motor sothat if occasion arises, theapparatus can be operated from storagebatteries.

From the foregoing, it is thought that the constructiomoperation andmany advantages of theherein. described invention will be apparent tothose skilled in the art without further description and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction may be resorted to without departing fromthespirt or sacrificing any of the advantages of the invention.

What we claim, is c 1. In a mining machine, the combination with a bodyhaving spaced upper and lower plates, of an arm projecting from the bodyand also comprising spaced upper and lower plates,'the plates of the armand of the body being lapped and secured together, a Vertical shaftjournaled in the lapped portions of the body-and arm plates, a motorgeared to the shaft, and a cutter chain mounted on the arm and actuatedby the sh aft.

2. In a mining machine, the combination with a body having spaced upperand lower plates, of an arm projecting from the body and comprising acore and upper and lower plates respectively covering the upper andlower sides of the coreand extending beyond the side margins thereof toform side channels along opposite sides of the arm, said arm plateshaving their rear ends extending between the body plates and securedthereto, a vertical shaft extending through the body and arm plates andhaving a sprocket wheel between the rear ends of said arm plates,-an-

other sprocket wheel j ournaled between the outer ends of the armplates, and a cutter chain extending around the sprocket wheels andoperating in the side channels of the arm.

3. In a mining machine, the combination I with a body, of an armprojecting therefrom,

said arm including a core, top and bottom plates covering the'upper andlower sides of the core and having projecting ends, said projecting endshaving longitudinal guidee ways, an upright spindle slidable in theguideways, a sprocket wheel mounted on the spindle between the plates,means interposedbetween the spindle and core for adjusting said spindlein the guideways and thereby adjusting the sprocket wheel, a cutterchain that passes around the sprocket wheel, and means on the body fordriving the cutter chain.

4. In a mining machine, the combination with a body, of an armprojecting therefrom, said arm including acore, top and bottom platescovering the upper and lower sides of the core and projecting beyond thesides of the same forming side channels, said plates also projectingbeyond the outer end of "the core and having longitudinal guideways' inits projecting ends, a carrier frame slidably mounted between saidprojecting ends, an upright spindle mounted in the carrier frame andhaving its ends slidable in the guideways,

a sprocket wheel mounted on the spindle within the carrier frame, acutter chain op erating in the side channels and about the sprocketchain, and means on the body for driving the cutter chain.

tures.

LOUIS M. WELD. JOHN H. OHLER. CLARENCE E. BERKLEY.

In testimony whereof, we aflix our signa-

